package demo01;

public class Chengxu19 {
    public static void main(String[] args) {
        int n = 4;
        for(int i = 1; i <= 4; i++){
        	for(int j = 1; j <= n - i; j++){
        		System.out.print(" ");
        	}
        	for(int k = 0; k < 2 * i - 1; k++){
        		System.out.print("*");
        	}
        	System.out.println();
        }
        for(int i = 3; i > 0; i--){
        	for (int j = 0; j < n - i; j++){
        		System.out.print(" ");
        	}
        	for (int k = 0; k < 2 * i - 1; k++){
        		System.out.print("*");
        	}
        	System.out.println();
        }
    }
}
